Claude Sonnet 4.6 vs GPT-5.4
How Claude Sonnet 4.6 (Anthropic) and GPT-5.4 (OpenAI) compare on price and capabilities — and how to use either on anyAInow without a subscription.
Claude Sonnet 4.6
Balanced
GPT-5.4
Balanced
Provider
Anthropic
OpenAI
Best for
Balanced
Balanced
Reads images
Yes
Yes
GPQA Diamond
87.5%
92%
AA Coding Index
63%
71.1%
Price
from $30 / 1M
from $30 / 1M
Subscription
None
None
Benchmark source: artificialanalysis.ai, as of 13 Aug 2026. Higher is better; figures are publisher-reported where not independently verified.
Claude Sonnet 4.6 or GPT-5.4?
Claude Sonnet 4.6 and GPT-5.4 both sit in the balanced tier, so they're closely matched for everyday work. On the GPQA Diamond reasoning benchmark, GPT-5.4 leads 92% to 87.5%. On anyAInow you can use either — or run both side by side to see which answers your prompts better — pay-as-you-go with no subscription.